Method for homogenizing alloys susceptible to the formation of carbide stringers and alloys prepared thereby

Patent · Tue Sep 09 00:00:00 EDT 1980

OSTI ID:6646931

Braski, D N; Leitnaker, J M

A novel fabrication procedure prevents or eliminates the reprecipitation of segregated metal carbides such as stringers in Ti-modified Hastelloy N and stainless steels to provide a novel alloy having carbides uniformly dispersed throughout the matrix. The fabrication procedure is applicable to other alloys prone to the formation of carbide stringers. The process comprises first annealing the alloy at a temperature above the single phase temperature for sufficient time to completely dissolve carbides and then annealing the single phase alloy for an additional time to prevent the formation of carbide stringers upon subsequent aging or thermomechanical treatment.

• Assignee: Dept. of Energy
• Patent Number(s): US 4221610
• OSTI ID: 6646931
• Resource Relation: Patent File Date: Filed date 24 Feb 1978; Other Information: PAT-APPL-880,919
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HASTELLOY N
ANNEALING
STAINLESS STEELS
CARBIDES
FABRICATION
PRECIPITATION
TITANIUM ALLOYS
ALLOYS
CARBON COMPOUNDS
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
HASTELLOYS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HEAT TREATMENTS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
SEPARATION PROCESSES
STEELS
360101* - Metals & Alloys- Preparation & Fabrication